python manage.py syncdb 错误：没有名为 south 的模块。在 Virtualenvwrapper 外部调用 Django 安装。

Question

我在一个使用 virtualenvwrapper 的环境中安装了 Django，并且还安装了 South。不过，当我运行 python manage.py syncdb 时，系统却调用了在 virtualenvwrapper 外部的 Django 安装，这样就找不到 south 了。我该怎么解决这个问题呢？

    [~/devground/django_gilgamesh]# pip install south
Downloading/unpacking south
  Downloading South-0.8.4-py2.py3-none-any.whl (135kB): 135kB downloaded
Installing collected packages: south
Successfully installed south
Cleaning up...
(django_gilgamesh)sdye@dy-borg.com [~/devground/django_gilgamesh]# python manage.py syncdb
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/sdye/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in   execute_from_command_line
    utility.execute()
  File "/home/sdye/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/sdye/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/sdye/lib/python2.7/site-packages/django/core/management/base.py", line 280, in execute
    translation.activate('en-us')
  File "/home/sdye/lib/python2.7/site-packages/django/utils/translation/__init__.py", line 130, in activate
    return _trans.activate(language)
  File "/home/sdye/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 188, in activate
    _active.value = translation(language)
  File "/home/sdye/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 177, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)
  File "/home/sdye/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 159, in _fetch
    app = import_module(appname)
  File "/home/sdye/lib/python2.7/site-packages/django/utils/importlib.py", line 40, in import_module
    __import__(name)
ImportError: No module named south

补充说明：我在 settings.py 文件中尝试过使用 'south' 和 'South'。下面是 settings.py 文件的内容。补充说明：我用 'south' 替换了 traceback，并重新安装了 south。补充说明2：运行 which django-admin.py 的输出是 /home/sdye/.virtualenvs/django_gilgamesh/bin/django-admin.py

BASE_DIR = os.path.dirname(os.path.dirname(__file__))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.6/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'p3)1ravw(zzt25-$tj0fd@r8^i1(0b1==tuk5e3ph32k8yjs20'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

TEMPLATE_DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'south',
)

MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
)

ROOT_URLCONF = 'django_gilgamesh.urls'

WSGI_APPLICATION = 'django_gilgamesh.wsgi.application'

更新：在命令行测试时，运行 import south 出现了 ImportError: No module named south 的错误。

django database migration importerror virtualenv settings.py module not found south environment configuration

python manage.py syncdb 错误：没有名为 south 的模块。在 Virtualenvwrapper 外部调用 Django 安装。

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